It reminded me of The Warriors.

This was a film from the 1970s or 80s made no later than 89 about street or biker gangs that wore distinctive gang colours/outfits like in the film The Warriors. I remember a scene reminiscent of the one in The Warriors, where Cyrus addresses all the gangs, only this scene took place in what seemed to be a large outdoor empty swimming pool (I think it was a pool, I only saw this film once as a child). All the gang members are sat around the edge of the pool listening to a speech. Also, the end shot is of the hero walking off down and empty road. I know the film is NOT 1990: The Bronx Warriors (1982) or Escape From The Bronx (1983) or Never Too Young To Die (1986) if this helps. Thanks.